Some subtraction strategies can only get you so far, but with a little more sophistication complex problems become really nice to think and reason about! In this episode Pam and Kim build and discuss the Constant Difference strategy for subtraction and use it to solve a really gnarly problem.
Talking Points:

• Equivalence strategies are more sophisticated
• Hallmarks of sophisticated stategies
• Modeling Constant Difference
• Relational Thinking Routine

Check out the Instructional Routine called Relational Thinking at: mathisfigureoutable.com/relational-thinking

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